diff --git a/homeassistant/components/dexcom/sensor.py b/homeassistant/components/dexcom/sensor.py
index ac85e63b598..afb3feeec4d 100644
--- a/homeassistant/components/dexcom/sensor.py
+++ b/homeassistant/components/dexcom/sensor.py
@@ -1,6 +1,6 @@
 """Support for Dexcom sensors."""
 from homeassistant.const import CONF_UNIT_OF_MEASUREMENT, CONF_USERNAME
-from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
 from .const import COORDINATOR, DOMAIN, GLUCOSE_TREND_ICON, GLUCOSE_VALUE_ICON, MG_DL
 
@@ -16,17 +16,17 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     async_add_entities(sensors, False)
 
 
-class DexcomGlucoseValueSensor(Entity):
+class DexcomGlucoseValueSensor(CoordinatorEntity):
     """Representation of a Dexcom glucose value sensor."""
 
     def __init__(self, coordinator, username, unit_of_measurement):
         """Initialize the sensor."""
+        super().__init__(coordinator)
         self._state = None
         self._unit_of_measurement = unit_of_measurement
         self._attribute_unit_of_measurement = (
             "mg_dl" if unit_of_measurement == MG_DL else "mmol_l"
         )
-        self._coordinator = coordinator
         self._name = f"{DOMAIN}_{username}_glucose_value"
         self._unique_id = f"{username}-value"
 
@@ -48,43 +48,23 @@ class DexcomGlucoseValueSensor(Entity):
     @property
     def state(self):
         """Return the state of the sensor."""
-        if self._coordinator.data:
-            return getattr(self._coordinator.data, self._attribute_unit_of_measurement)
+        if self.coordinator.data:
+            return getattr(self.coordinator.data, self._attribute_unit_of_measurement)
         return None
 
-    @property
-    def available(self):
-        """Return True if entity is available."""
-        return self._coordinator.last_update_success
-
-    @property
-    def should_poll(self):
-        """Return False, updates are controlled via coordinator."""
-        return False
-
     @property
     def unique_id(self):
         """Device unique id."""
         return self._unique_id
 
-    async def async_update(self):
-        """Get the latest state of the sensor."""
-        await self._coordinator.async_request_refresh()
 
-    async def async_added_to_hass(self):
-        """When entity is added to hass."""
-        self.async_on_remove(
-            self._coordinator.async_add_listener(self.async_write_ha_state)
-        )
-
-
-class DexcomGlucoseTrendSensor(Entity):
+class DexcomGlucoseTrendSensor(CoordinatorEntity):
     """Representation of a Dexcom glucose trend sensor."""
 
     def __init__(self, coordinator, username):
         """Initialize the sensor."""
+        super().__init__(coordinator)
         self._state = None
-        self._coordinator = coordinator
         self._name = f"{DOMAIN}_{username}_glucose_trend"
         self._unique_id = f"{username}-trend"
 
@@ -96,38 +76,18 @@ class DexcomGlucoseTrendSensor(Entity):
     @property
     def icon(self):
         """Return the icon for the frontend."""
-        if self._coordinator.data:
-            return GLUCOSE_TREND_ICON[self._coordinator.data.trend]
+        if self.coordinator.data:
+            return GLUCOSE_TREND_ICON[self.coordinator.data.trend]
         return GLUCOSE_TREND_ICON[0]
 
     @property
     def state(self):
         """Return the state of the sensor."""
-        if self._coordinator.data:
-            return self._coordinator.data.trend_description
+        if self.coordinator.data:
+            return self.coordinator.data.trend_description
         return None
 
-    @property
-    def available(self):
-        """Return True if entity is available."""
-        return self._coordinator.last_update_success
-
-    @property
-    def should_poll(self):
-        """Return False, updates are controlled via coordinator."""
-        return False
-
     @property
     def unique_id(self):
         """Device unique id."""
         return self._unique_id
-
-    async def async_update(self):
-        """Get the latest state of the sensor."""
-        await self._coordinator.async_request_refresh()
-
-    async def async_added_to_hass(self):
-        """When entity is added to hass."""
-        self.async_on_remove(
-            self._coordinator.async_add_listener(self.async_write_ha_state)
-        )